Daikin VRV II-Q RQYQ8-48PY1B Service Manual page 180

Troubleshooting by Remote Controller
Troubleshooting
170
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Diagnosis Flow 1
Confirmation of error 3 Confirmation of error 4
The number of indoor
units connected to the
same refrigerant system
should not more than 64
units.
NO
Diagnosis Flow 2
Confirmation of error 3 Confirmation of error 4
Check if the refrigerant
type of the outdoor unit
corresponds to that of the
indoor unit.
NO
YES
YES
SiBE341027
Replace the outdoor unit main
PCB.
The number of indoor units
exceeds the allowable range.
Check the connection to correct.
Replace the outdoor unit main
PCB.
Match the refrigerant types of the
outdoor unit and the indoor unit.
Service Diagnosis